Living Rocks of Mexico
Ariocarpus retusus subsp. retusus
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Location: Rio Verde, San Luis Potosi

     
A. retusus 'scapharostroides' A. retusus 'scapharostroides' A. retusus 'scapharostroides'
A. retusus 'scapharostroides' LRM250,  a mature plant from Rio Verde

A. retusus 'scapharostroides' LRM250, a seedling plant already developing the characteristic tubercle shape.

A. retusus 'scapharostroides' LRM250, stem morphology is consistent in all specimens at this location.

     

Comments

At Rio Verde the southern limits of the distribution range of A. retusus are reached, plants in these southern populations correspond to what has been described as A. retusus ssp. scapharostroides, the plants are quite small compared to those encountered further North, and in the case of the colony illustrated were limited in number.

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